(CNN) - Polish President Lech Kaczynski was killed early Saturday along with his wife, several top military officials, and the head of the national bank when their plane crashed at a western Russian airport, officials said.

"There are no survivors," said Sergey Antufyev, the governor of Smolensk, where the plane was trying to land when it crashed.

A spokesman for Poland's Foreign Ministry, Piotr Paszkowski, said earlier that it was probable that everyone on board was killed.